/*
* Copyright 2010 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.optaplanner.examples.common.persistence;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import org.optaplanner.core.api.domain.solution.PlanningSolution;
/**
* @param <Solution_> the solution type, the class with the {@link PlanningSolution} annotation
*/
public abstract class AbstractTxtSolutionExporter<Solution_> extends AbstractSolutionExporter<Solution_> {
protected static final String DEFAULT_OUTPUT_FILE_SUFFIX = "txt";
protected AbstractTxtSolutionExporter(SolutionDao<Solution_> solutionDao) {
super(solutionDao);
}
protected AbstractTxtSolutionExporter(boolean withoutDao) {
super(withoutDao);
}
@Override
public String getOutputFileSuffix() {
return DEFAULT_OUTPUT_FILE_SUFFIX;
}
public abstract TxtOutputBuilder<Solution_> createTxtOutputBuilder();
@Override
public void writeSolution(Solution_ solution, File outputFile) {
try (BufferedWriter writer =
new BufferedWriter(new OutputStreamWriter(new FileOutputStream(outputFile), "UTF-8"))) {
TxtOutputBuilder<Solution_> txtOutputBuilder = createTxtOutputBuilder();
txtOutputBuilder.setBufferedWriter(writer);
txtOutputBuilder.setSolution(solution);
txtOutputBuilder.writeSolution();
logger.info("Exported: {}", outputFile);
} catch (IOException e) {
throw new IllegalArgumentException("Could not write the file (" + outputFile.getName() + ").", e);
}
}
public static abstract class TxtOutputBuilder<Solution_> extends OutputBuilder {
protected BufferedWriter bufferedWriter;
protected Solution_ solution;
public void setBufferedWriter(BufferedWriter bufferedWriter) {
this.bufferedWriter = bufferedWriter;
}
public void setSolution(Solution_ solution) {
this.solution = solution;
}
public abstract void writeSolution() throws IOException;
// ************************************************************************
// Helper methods
// ************************************************************************
}
}